For a circle of radius r, the area is given by A = 2
r.
Answer the following statement true (T) or false (F)
False
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Solve the problem.A right circular cylinder is obtained by revolving the region enclosed by the line x = r, the x-axis, and the line 
about the y-axis. Find the volume of the cylinder.
A. ?rh2 B. 2?r2h C. ?rh D. ?r2h
Find the equation of the hyperbola satisfying the given conditions.Vertices at (0, 6) and (0, -6); asymptotes y = 
x and y = - 
x
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Use the sum/difference identities to simplify the expression. Do not use a calculator.cos 170° cos 50° + sin 170° sin 50°
A. cos 120° B. cos 190° C. cos 210° D. cos 220°
Find the particular solution of the differential equation.
= 6x2 - 4x + 21; y = 17 when x = 1
A. y = 2x3 - 2x2 + 21x + 4 B. y = 6x3 - 4x2 + 21x - 6 C. y = 2x3 - 4x2 + 21x - 2 D. y = 2x3 - 2x2 + 21x - 4